Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 59f2921bc964e22a…

MALICIOUS

PDF / .VIR

44.9 KB
MD5: b4e04735dcea9e76d8548a2f7caed878 SHA-1: d41dc1c152a08867354052c342b702ec87b434a7 SHA-256: 59f2921bc964e22abfc025e631eacc77a33f28072384ac7e5b154077920399d4
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The file is a PDF document that contains embedded JavaScript, as indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The ClamAV detection of 'Heuristics.PDF.ObfuscatedNameObject' further suggests malicious intent. While the document body is largely unreadable, the presence of JavaScript points towards an attack pattern involving exploitation or payload delivery. The embedded URLs, though some are confirmed benign, are included as potential indicators.

Heuristics 5

  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/2.6/
    • http://www.xfa.org/schema/xfa-template/2.6/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0012_000.js
840b5e991d212ccd4189910eb3b3c0113179b70081572b294980c2dfdba70c7a
pdf-javascript-stream PDF /JS object 12 at offset 0xA1D8 3350 bytes